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Merge / convert multiple PDF files into one PDF
How could I merge / convert multiple PDF files into one large PDF file?
18 Answers
18
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Emacs on Mac OS X Leopard key bindings
... here are the key bindings, for moving around text:
⌥ + ← - move left one word
⌥ + → - move right one word
⌥ + delete - back delete one word
Shift + ⌥ + delete - foward delete one word
⌥ + ↑ - move up one paragraph
⌥ + ↓ - move down one paragraph
⌘ + ← - move to start of cur...
Using generic std::function objects with member functions in one class
For one class I want to store some function pointers to member functions of the same class in one map storing std::function objects. But I fail right at the beginning with this code:
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Asking the user for input until they give a valid response
...g and Custom Validation
Both of the above techniques can be combined into one loop.
while True:
try:
age = int(input("Please enter your age: "))
except ValueError:
print("Sorry, I didn't understand that.")
continue
if age < 0:
print("Sorry, your resp...
The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or
..., x[[i]] or x[i] will return the ith sequential element of x.
For lists, one generally uses [[ to select any single element, whereas [ returns a list of the selected elements.
The [[ form allows only a single element to be selected using integer or character indices, whereas [ allows indexing by...
How to find the 'sizeof' (a pointer pointing to an array)?
...p until that value, but that's not using sizeof().
Another trick is the one mentioned by Zan, which is to stash the size somewhere. For example, if you're dynamically allocating the array, allocate a block one int bigger than the one you need, stash the size in the first int, and return ptr+1 as...
How to send only one UDP packet with netcat?
I want to send only one short value in a UDP packet, but running the command
5 Answers
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- how to allow only one item selected?
...tiple> field with multiple options and I want to allow it to have only one option selected at the same time but user can hold CTRL key and select more items at once.
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Multiple returns from a function
...function would return $var2
function wtf($blahblah = true) {
$var1 = "ONe";
$var2 = "tWo";
if($blahblah === true) {
return $var2;
}
return $var1;
}
In application:
echo wtf();
//would echo: tWo
echo wtf("not true, this is false");
//would echo: ONe
If you wanted them...
Checking if a list is empty with LINQ
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Or use one line and do return (source==null) ? true : !source.Any(); (If your not throwing an exception)
– Gage
Aug 26 '10 at 15:23
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